Ore-pulverizer



(No Mdel.) 2 SheetS-Shet 1.

J. B.-SWEETLAND.

y ORB yuLvERIZER. 10,292,384 .Patented Jan. 22,1884.

(No Model.) 2 Sheets- Sheet 2. y

- J. B. SWEETLAND.

, ORB-PULVERIZER. No. 292,384.. Y Patented Jan. 22, 1884.

N. PETERS. Plmwumngmplwr. whmunm D. c.

UNITED' STATES "PATENT QFFICE. d'

l .JEROME B. vSVEETLAND, OF PONTIAC, MICHIGAN? ORE-PULVERIZER.

SPECIFICATION forming-part of Letters'latent No. 292,384, dated January 22, 1884.

Application led May 11, 1883. (No model.)

To all whom, it may concern: y

Be it known that I, JEROME B. SWEETLAND, of Pontiac, county of Oakland, State of Michigan, have invented a new and useful Improvement in Ore-Pulverizers; and I declare the followingtobeafull, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains tomake and use it, reference being had to the accompanying drawings, which form a part of this specication. v i

My invention consists in the construction and combination of devices hereinafter specified, and more particularly pointed out in the claims.

In the drawings, Figure 1 is a plan view of one of the parts of an apparatus embodying my invention. Fig. 2 is a'vertical section of one form of the device. Fig. 3 is a plan view of a portion of the cover of the same. Fig. 4 isa plan view of the screen. Fig. 5 is avertical -section of one form of the'device, showingy a preferable construction in vcertain parts of the device. Fig. 6 is a plan viewof the same with the cover removed. Fig. 6 is a plan of the distributing-hopper, showing 'the three compartments thereto. Fig. 7 is a detail view of a portion of the same. Fig.. 8 is a plan View of the feeding apparatus. Fig. 9 is a vertical section of the same.

The object of my invention is tov provide an improved ore-pulverizer, and is more especially designed as an improvement upon an ore-pulverizer forv which Letters Patent were granted to me dated January 30, 1883, No.Y 271,285. l In Carrying out my invention, A, represents y the supporting-frame, of any suitable construc- 5o for instance, by lugs ZPL The shell is also prointerior beveled projections or strips, bt, cast' solid with the shell.4

C is a ring concaved on-its interior, adapted to t into the interior of the shell B, and provided on its exterior with upright beveled projections or strips c, analogous to those upon the interior of the shell. The concave ring may have a shorter curve to the upper portion thereof, if desired, as shown in Figs.

5 and 7, the construction being such that an additional motion will be given tothe balls when rotated,` the balls having more contact on the upper portion ofthe ring than on the lower.

vI do not, however,limit myself to such a construction, as the concavity of the ring'may be constructed as shown in Fig. 2. The concave ring is also constructed with a suitable groove or channel upon either the top or bottom, or both, as indicated at c and c2, into which suitable packing may be located," the packing serving to keep the pulverized dust orwater from passing outside the concave ring, and also tending to hold the ring more rmly inplace. The base of the concave ring, as shown in Fig. 5, is located within the shell. I prefer, however, as shown Fig. 2, to broaden fthe d1scharge-orifice in the bottom of the shell and to extend the base of theconcave ring through the bottom of the shell to a suitable distance, the construction being such that a suitable discharge-hopper, C', may be secured thereto to hold the ring more firmly in place.

Vl) is .the web providedl with a shaft, E, by means of which it is revolved. This web may be constructed substantially as set forth in my patent above referred to, and is adapted to be revolved within the concave ring C, the balls 1d in the orices d. of the web crushing the ore 9 `against the concave ring. The web-w1ll be provided with movable adjustingpins d2, lset into sockets formed in the web and bearing against elastic cushions therein, as described in mysaid former patent, toreceive the back- IOO ward force of the balls and the wear and tear necessarily occasioned thereby, and to take up the wear of the balls, as described in said patent. Instead, however, of constructing the web precisely in this manner, I prefer, as shown in Figs. lr and 2, to construct upon the upper side of the web a casing, D', either cast upon the web or secured thereto in any proper manner, said casing preferably projecting upward toward the center, thus providing a feeding-space, D2, the feeding-space about the center of the web communicating with a suitable number of channels, d, there being as many channels as there are balls to be rotated by the web. By this construction it is evident that when the ore is once fed into the space D2 it will be prevented from being thrown by eentrifugal force broadcast over the surface of the web, but will be thrown by centrifugal force through the channels d, and thus fed directly in front of the balls as the web is rotated. The shaft of the web may be provided with a suitable pulley, F, of any suitable gearing, by which the web may be rotated. It is evident that when the web is rotated av strain will be communicated by the balls upon the concave ring. In order to communicate this strain to the shell, the shell and the ring are provided with the beveled projections b4 and c, as liereinbcfore described, the construction being such that the outer meeting faces of the projections are wedge-shaped in opposite directions, that the strain will continually tighten the concave ring in its location within the shell 5 and yet whenever it may be desired to remove the ring, by turning it in the opposite direction, it may also be readily disengaged and removed.

B is the top of the shell. This may be constructed, as shown in Fig. 5, in one solid piece, provided with a hand-hole, Bl, said top being secured upon the shell by means of the bolts b3. Instead, however, of making the top in one piece, as shown in Fig. 5, I prefer the construction shown in Fig. 2, in which b7 is an annular plate secured upon the shell and extending over the upper edge of the concave ring, suitably provided with a groove upon its upper edge to receive suitable packing, as shown at b5. Upon this annular plate is secured the cover proper, B, said cover being provided with the hand-hole B2.

To get more ready access to the interior of the apparatus for any purpose-such as the sampling of the ore and more thoroughly emptying the device when used by the assayer, and in order to more readily inspect the interior from time to time-I prefer that the cover should be `so constructed that it may be lifted, as shown in Fig. 2, in which the cover is suitably hinged to the shell or plate, as shown at B, by means of which the cover, together with the web, may be tilted, as shown in dotted lines in Fig. 2. The cover may be secured upon the plate in any suitable manner-as, for instance, by screws at Za. It will be seen that by lifting the cover, as thus described, the whole interior of the shell is easily accessible either for inspection or for repairs.

G is a distributing-hopper located about the shaft E, and communicating with the interior of the shell by a'suitable number of channels, said channels preferably corresponding in number to the number of theballs used, the interior of the hopper being also preferably constructed with a corresponding number of divisions, as shown in Fig. 6, directing the ore into said channels, the construction being such that the ore maybe fed to each of the balls located at the periphery of the web, in order that each may have its proper share of the work.

G is a sleeve encircling the shaft, so as to prevent any ore passing from the hopper against the shaft.

H is a feeding device supported in any suitable manner. The feeding deviceis constructed with a hopper, H', having a false bottom, H2, covering a portion of the bottom of the hopper.

H1 is a vibrating apron, having three compart1nents,h, h', and h2, com municating with the hopper H, and adapted to passthe ore over the top edge of hopper G into the three compartments thereof. rlhe vibrating apron is pivoted to the false bottom H, the compartments h and hI being extended, so as to straddle the shaft E, said shaftbeing provided with a cam, j', adapted to vibrate the apron when the shaft is rotated.

h is a gate located in the hopper H', by means of which the feeding of the ore may be regulated as desired. By means of this feeding device it is evident that the ore may be more conveniently distributed to the balls within the shell.

The cover of the arm-hole Bl may be secured by any suitable means, the construction being such that it may be readily removed, in order that the operator may look into the interior ofthe apparatus and ad]` ust the balls or pins; or it may be removed, if necessary, without removing the entire cover from the shell. I prefer also to shrink upon the shell one or more hoops, B, as shown in Fig. 5, to give additional strength and also permit the shell to be made of lighter casting than would otherwise be required, though this is not an essential element of my invention.

I prefer to provide the discharge-orilice with a screen. As shown in Fig. 2, this screen I is constructed to rest in the mouth of the discharge-hopper, the outer edges of the screen being provided with a beveled rim, a', which will iit against the inner face of the concave ring, as shown in Fig. 2, so as to prevent the ore from lodging thereon. It will be observed that the screen in this location is adapted to receive the balls when the cover with the web is raised, for when the web is lifted it is removed from contact with the balls, and they then fall onto the screen, This screen I is IOO IIO

shown more fully in Fig. 4. 4Should the discharge-orifice be contracted, as shown in Fig. v5, the screen may be securednpon an upwardly-projecting ring, K, as shown at k, said ring K being capable of firm adjustment in the discharge-oriiiceof the shell by means of screws or other suitable means. This construction is more particularly adapted for use inwhat is called the wet process, when it may be desirable to have the water stand within the shell to a suitable depth, the ring K projecting upward for this purpose, thereby causing the properly-pulverized ore to pass through the'screen at the top, while the unpulverized ore remains within the shell until ground sufficiently ne to pass through the screen. In case the dry process is used the screen might be omitted, if desired, in whichV case, also, the ring K'shown in Fig. 5 would also be removed. I prefer the construction shown in Fig. 2, in which case the screen may be employed for both wet and dry processes. In case large balls are desired to be used at the periphery of the web, they may be constructed .hollow should it be desired also to dispense with unnecessary weight. v

It is evident that the ore-pulverizer, as thus constructed, may be cheaply manufactured and repaired, as all the parts which receive the wear-the concave ring, .the balls and the pins against which they impinge, &c.-may be easily removed and replaced by duplicates of simple castings whenever desired.

, I reserve the right to claim in another application all patentable features shown but not claimed.

WhatIclaim is- 1. In an ore-pulverizer, a casing provided with upright beveled projections on its inner face, in combination with al detachableconcave ring tted within the casing, and providedwith upright beveled strips on its outer surface, and adapted to engage with the beveled strips on the inner face of the casing,whereby the connection between the two parts may be tightened and loosened, substantiallyas described.

2. In an ore-pulverizer, the combination, with a casing, of detachable concave ring'resting on the bottom of the casing, and provided with a downwardly-projecting base extending through an opening in the bottom of the casing, and a hopper attached to the lower edge of the ring below the bottom of the casing, substantially as' described.

3.- .In an ore-pulverizer, the combination of the casing, the concave ring having a'base eX- tended through the casing, the hopper attached to the bottom of the concave ring, and the screen 'tted against the inner face of the eX-A tended base of the ring and provided with an upwardlyextending beveled circumferential rim, substantially as described.

' a casing provided with beveled projections onV 4. In an ore-pulverizer, the combination of its'inner face, a concave ring provided withv a groove in its top face to receive a packing,

and with beveled strips on' its outer surface to engage with the projections on the casing, as described, and a removable top tting over the ring and casing and against the packing in the ring to hold the latter in place, substantially as described."

5. In an ore-pulverizer, the combination of a casing, a rotary web provided with loose balls at its periphery, and a casing, D', fitted over'the web and adapted to direct the ore through suitable channels to the'periphery of the web, substantially as described. i

6. In an o re-pulverizer, the combination of a casing, an interior concave ring, an annular plate secured upon .the -upper surface of said casing and ring, and a hinged cover secured upon saidplate7 substantially as described.

7. In an ore-pulverizer, the combination of the casing, the annular plate fitting over the same, the cover hinged to the plate, and the packing between the plate and cover, substantially as described. i

8. In an ore-pulverizer, the combination of the casing, a hinged cover thereto, a shaft passing through the cover, and the web secured to the lower end of the shaft, substantially as described.

9. In an ore-pulverizer, the combination of a casing, a distributing-hopper divided into compartments and provided with channels communicating with the casing, a feed-hopper, a vibrating apron divided into compartments communicating with said hopper and the comroo partment-s of the distributing-hopper, and a cam-shaft for vibrating the hopper, substantially as described.

10. In an ore-pulverizer, the combination of a casing having a concave face with ashorter 103 curve at the upper portion than at the lower portion thereof, and a rotating web carrying loose balls at its periphery next to the concavity of the ring, substantially as described.

l1. In an ore-pulverizer, au interior concave 1 1o ring provided with upright beveled strips ou its outer surface, and grooves for packing on its edges, substantially as described.

12. In an ore-pulverizer, the combination of a casing, a ring within the same, having a 115 concaveface with a sh orter curve at the upper portion than at the lower portion thereof,

a rotating web carrying loose balls at its periphery, and adjustingipins set in the web opposite to the balls, substantially as described. 12o

In testimony whereof I sign this specica tion in the presence of two witnesses.

JEROME B. SVVEETLAND.

Witnesses:

N. S. WRIGHT. WILLIAM l?. FORD. 

